September weather forecast and climate
Sámara, Costa Rica

The first month of the autumn, September, is also a hot month in Sámara, Costa Rica, with average temperature ranging between max 30°C (86°F) and min 23°C (73.4°F).

Temperature

The coldest months are September and October, with an average high-temperature of 30°C (86°F).

Rainfall

In Sámara, during 23 rainfall days, 391mm (15.4") of precipitation is typically accumulated. In Sámara, during the entire year, the rain falls for 173 days and collects up to 2090mm (82.3") of precipitation.

Sea temperature

In Sámara, the average water temperature is 28.8°C (83.8°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In September, the average length of the day in Sámara, Costa Rica, is 12.2h.

Sunshine

Months with the least sunshine in Sámara are September and October, with an average of 5h of sunshine.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an extreme health hazard from unprotected exposure to the Sun's UV rays for average individuals.
The average daily UV index of 12 in September transform into the following instructions:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What are the coldest months in Sámara?

The coldest months in Sámara are September and October, with an average high-temperature of 30°C (86°F).

What is the temperature in September in Sámara?

In September, in Sámara, the average high-temperature is 30°C (86°F), and the average low-temperature is 23°C (73.4°F).

How much does it rain in Sámara in September?

In Sámara, Costa Rica, during September, the rain falls for 23 days and regularly aggregates up to 391mm (15.4") of precipitation.

What is the sea water temperature in September in Sámara?

In Sámara, in September, the average water temperature is 28.8°C (83.8°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in September in Sámara?

In September, the average length of the day is 12.2h.

What is the month with the least sunshine in Sámara?

Months with the least sunshine in Sámara, Costa Rica, are September and October, with an average of 5h of sunshine.

How long on average sun shines in September in Sámara?

The average sunshine in September in Sámara, Costa Rica, is 5h.

What is the month with the highest UV index in Sámara?

February through October, with an average maximum UV index of 12, are months with the highest UV index in Sámara, Costa Rica.

What is the UV index intensity in September in Sámara?

In September, the average daily maximum UV index is 12. A UV Index of 11, and more, symbolizes an extreme health threat from unprotected exposure to the UV radiation.
Average temperature in September - Sámara, Costa Rica
  • Average high temperature in September: 30°C

Warmest months (with the highest average high temperature) are February, March and April (33°C).
Months with the lowest average high temperature are September and October (30°C).

  • Average low temperature in September: 23°C

Months with the highest average low temperature are February, March, April and May (24°C).
The coldest month (with the lowest average low temperature) is December (22°C).

Average rainfall in September - Sámara, Costa Rica
  • Average rainfall in September: 391mm

The wettest month (with the highest rainfall) is October (398mm).
The driest month (with the lowest rainfall) is January (0mm).

Average rainfall days in September - Sámara, Costa Rica
  • Average rainfall days in September: 23 days

The month with the highest number of rainy days is September (23 days).
The month with the lowest number of rainy days is March (5 days).

Average sea temperature in September - Sámara, Costa Rica
  • Average sea temperature in September: 28.8°C

The best month for swimming (with the highest average sea temperature) is May (29.4°C).
The coldest month (with the lowest average sea temperature) is January (27.3°C).

Average daylight in September / Average sunshine in September - Sámara, Costa Rica
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 12.7h).
Months with shortest days are January and December (Average daylight: 11.6h).

  • Average sunshine in September: 5h

Months with most sunshine are January, February, March and April (Average sunshine: 8h).
Months with least sunshine are September and October (Average sunshine: 5).

Average UV index in September - Sámara, Costa Rica
  • Average UV index in September: 12

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).

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